NS_E_DVD_GRAPH_BUILDING (0XC00D116C) - DVD Won't Play in WMP

When This Error Hits

You pop in a DVD, Windows Media Player opens, then you get that error box: "Windows Media Player cannot play DVD video. The graph building engine could not build the graph." The error code is 0XC00D116C. This happens most often on Windows 10 after a fresh install or an update. It can also show up if you're running an old version of WMP (like version 11 or 12) and the DVD's region doesn't match the drive's region.

Root Cause

The culprit here is almost always a missing or broken MPEG-2 decoder. WMP needs this decoder to play standard DVDs. Windows 10 technically has one built in, but it's often disabled or outdated. Third-party codec packs (like K-Lite or CCCP) can also interfere — they overwrite the system codecs and break things. Rarely, it's a bad DVD drive driver or a corrupt registry entry.

The Fix (3 Steps)

Skip the fancy tools. Do this instead.

Step 1: Install the Windows 10 DVD Playback Feature

Microsoft removed the DVD decoder from Windows 10 to save licensing costs. You can add it back for free if you have the right version.

1. Open Settings (Win + I).
2. Go to Apps > Apps & Features.
3. Click Manage optional features.
4. Click Add a feature.
5. Scroll down and look for Windows Media Player Legacy and Windows DVD Player. Install both.
6. Wait for the installation (takes 2-3 minutes). Restart your PC.

Step 2: Check Your Codec Setup

If step 1 didn't work, your codecs are likely scrambled. Here's the clean fix.

1. Uninstall any third-party codec packs (K-Lite, CCCP, Shark007, etc.). Go to Control Panel > Programs and Features and remove them.
2. Open Command Prompt as Administrator. Type sfc /scannow and hit Enter. Let it run. This fixes system files.
3. After that, run DISM /Online /Cleanup-Image /RestoreHealth. This fixes the component store.
4. Reboot.

Step 3: Reset WMP and DVD Region

Sometimes WMP's state gets corrupted. And a mismatched region is a common gotcha.

1. Open WMP. Go to Tools > Options (if you don't see Tools, press Alt).
2. Click the DVD tab. Set the region to match your DVD (usually Region 1 for US/Canada). You only get 5 changes, so be careful.
3. Still broken? Reset WMP: Press Win + R, type regsvr32 wmp.dll, press Enter. Then run regsvr32 wmploc.dll.
4. Restart the PC.

What If It Still Fails?

If you've done all that and it still doesn't play, try these:

• Install VLC Media Player. VLC has its own DVD decoder built in and doesn't rely on Windows codecs. It's the nuclear option — always works.
• Check your DVD drive. Try the DVD in another PC. If it works there, your drive might be failing. Also update the drive's firmware from the manufacturer's site.
• Disable antivirus temporarily. Some AV software (looking at you, Norton) blocks WMP from accessing the drive. Test without it.
• Run the Windows Media Player DVD troubleshooter. Search for "Troubleshoot" in the Start menu, find "Windows Media Player DVD," run it. It rarely fixes anything, but sometimes it points you in the right direction.

The real fix is step 1 or step 2. Don't waste time on registry edits or reinstalling drivers. Nine times out of ten, it's a missing decoder or a broken codec pack.